Hospital bed



March 26,- 1929. G. ROBINSON HOSPITAL BED 4 Sheets-Sheet 1 Filed June 24, 1925 gaf' 0a/600) 311112144'0@ March 26, 1929.. G. ROBlNSQN 1,706,545

HOSPITAL BED l Filed June 24; 1925 4 Sheets-Sheet 2 March 26, 1929.

G. -RoBlNsoN 1,706,545

HOSPITAL BED Filed June 24, 1925 4 sheets-sheet 3 QW y@ 4March 26, 1929. G, R0B|Ns0N 1,706,545

HOSPITAL BED Filed June 24, 1925 4 Sheets-Sheet 4 IIII w 2m/@f2 Fa/27000, gin/mm Patented Man 276, `192.9.

narran sm'i-rz-s'v PATENT OFFICE;

eURnENRoBINsoN, or GRANT, MICHIGAN, AssIG'NoR 0F 'ONE-HALF 'ro WARD sHn'r- Y TUCK, 0F GRANT, MICHIGAN.

v HOSPITAL BED.

lAppiieaun filed .June 24, 1925. seri-a1 No. 39,341.

This'invention appertains to hospital beds and the-primary object of tlie inventionis-to provide such a bed, which can be adjusted so as to permit the body portion thereofv to i spring movable relative to the fra-me of the bed at .different angle's,-and a vmovable head piece for the body or springwhich can be set at different angles to the main portion of the spring, the adj ustability of the body or spring and tlie head piecepermitting a combination ofadjustments to be had, which will meet with the varying conditions of different patients. y f f `A further object of the invention is to `provide a novel means for associating the body Vor spring with the frame ofthe bed, a novel means foradjusting the body or spring rela-` tive to the frame of the bed andthe head of the spring relative to the main portion thereof, whereby the bed can beadjusted in a minimumamount of time andwith a minimum amount of energy.

A further object of the inventionisto provide means yfor detachably looking the swinging head section ofthe spring with the main body portion of s tli e spring,Y wherebyv the head section can be adjusted independenti ly of the main portion of the spring orinoved.

with the main portion of the spring when locked tliereto.. f i

A still further yobject of invention is the provision of novel mea-ns of associatingA the spring withv the adjusting means there-` j for,7 whereby'the spring can-be readily re'- moved from the yframe and necessary Lor desirable.

' A still further obj ect of thefinvention'is to provide an improvedv hospital bed of the above character, which will be durable and efiicient in use,'one-that will be simpleand easy to manufacture and one which can ybek placed upon the market at a reasonablecost. l/Vith theseand other objectsinq view, vthe y invention .consists inthe novel construction,

arrangement and formation of parts, as will be hereinafter more specifically 'described,

claimed,-and illustrated in the ,accompanying drawings, in which drawings Figure 1 is a side elevation of the improved adjusted whenk .taken on the' line 5 5y of Figure 3 looking in the direction of the arrows,

Figure is a Vfragmentary detail perspective view illustrating the means for associating one of the adjusting shafts with the frame of the -bed and the novel adjusting or lifting arms connected therewitln Figure 7 is a detail longitudinal .section through the bedj illustrating the means for portion of the spring inposition,

yFigure ,8 isa fragmentary detail perspective view illustrating the means .for connectingthe movable head section of the spring with the main bodyrportion-thereof,

- Figure Sis a'frag'inentary plan view of the frame ofthe bed showing the arrangement ofthe adjusting ymechanism for the head section,

iguie lllis a detail section taken on'tlie Y hline 1 0-10 ofkFigure 2 showing the means of connectingVv the lifting arinsto ythe mow,4V l

able headsection of the frame, I

Figure' 11l Vis' a fragmentary perspectiveview illustrating the arrangementof the lifting arms for the head section withithe adjusting cross rod forthe spring. l V

' Referring to the drawings in detail, wliereL in similar reference characters designate corL responding lparts throughout the several views, the letter'A generally indicates .the

improved hospitall bed, whichcomprises a frame 15 which can be constructed substan-` tially .the same as ordinary iron or. hospital bythe longitudinally extending side rails 18.

`The headand foot pieces 16 and 17 are pref# erablyformed from tubing andthe legs there' of can belprovided with suitable casters Q1.'

75 mountingthe adjusting shaft kfor the head i riveted to the said straps 3l.

Arranged within the frame l5 is the novel bed spring 25 which includes a main vbody portion 26 and a movable head section 27.

The main body portion 26 of the spring 25 includes end bars 28 and 29 which can be formed of angle iron and these bars 28 and V29 have rigidly connected thereto the longitudinally extending side rails 30. These side rails each preferably include a pair of spaced parallel iiat bars or straps 31 and the terminals of the angle bars 28 and 29A V29. `While l have shown a particular type of spring body connected to the frame with springs,v it is to beunderstood t at any de sired type of spring bodycan be utilized.

The movable head section 2" of the 'spring 25 embodies side arms 36 which are of a sub-- stantially U-shape in cross section. he outer ends of these arms 36 are connected by a transverse cross bar 37. rilhe arms 36 are adapted to be normally positioned between theV parallel straps 3l forming the side rails of the frame of the spring l5 and the arms are rockably connected to said longitudinal side bars 30 by means of pivot pins 38 extendn ving through the said parallel straps 31.

Angularly extending legs 39 are formedfo'n the inner ends of the arms'36 and normally extend below thelongitudinal side rails 30. These legs 39 carryra U-shaped transverse cross bar 40` the ends of which are engaged by clips 4l formedon the legs 39. rllhis insuresvthe movement of the Up-shaped transverse cross'rod 40 with the head section 27 during the swinging movement thereof. This rod 40 has connected thereto lo'ops 42 which in turn carry a cross rod 43 havingarf ranged thereon a plurality of rings 44.

verse cross bar 3? of the said swinging seci tion 27.

Invorder'to iermit the free swinging movel t2 o ment of the head section 27 the links fornuV ing the head section are extended between the links forming themain'spring vbottom of the spring 25.

ln order to raise and lower the head. section 27, lifting arms 48 are provided. These lifting arms 48 are extended through the parallel bars 3lof the side rails of the spring bottom and have their lower terminals secured to or formed on gear wheelsp49 which mesh with gear wheel 50 carried by a trans- .70 verse shaft 5].. The gears 49 and 50 arefarranged between depending extensions v.52 formed on the side rails of the frame of the bed and straps 53 and the extensions 52and 53 support short stub shafts 54 which rotat- 75 ably receive the gears 49. The straps 53 and the extensions 52 form bearings fer thetransverse shaft 5l and the central portion of this shaft receives a` rigid frame 55 which is bolt e to the end rail 20 ofthe bed frame. 80 rlphis frame 55 rotatably supports a downwardly inclined drive shaft 56 having formed thereon or secured thereto a worm 57 which meshes with a sector worm wheel 58 keyed tothe shaft 5l. 85

Disposed in spaced parallel relation to the shaft 5l is the operating shaft 59which is rol tatably mounted in suitable bearingscarried by the longitudinal side rails 18 of the bed frame@ This sl1aft'59has secured thereto a et beveled gear 60, which meshes with a beveled gear 6l secured to the inclined shaftv 56. Hand wheels 62 are carried by theV oppositeends of the shaft 59 so as to permit the operatien of the shaft from either side of the bed. lt is obvious that by turning the shaft 59 that the lifting arms 36 can be raised or lowered according to the direction of rotation -ofthe said -shaft 59. lf the arms 48 are swung tov a raised position, the head section will be elelue vated and the legs 39 will be brought downward pulling on the springs 45 insuring the proper tensioning thereof irrespective of the position of the 'said swinging vhead section. The head angle bar 29 `of the Vframe of the 17075 spring bottom 25 has formed thereon at .f spaced points barrels 463 and when the head section 2? is in its'extreme Alower position in parallel relation to the'main Aframe of thespring bottom, barrels' 64 Vformed on the con--v 11e y necting bar 37 ofthe head section are'ldfllptedtoaline with the barrels 63. By inserting connecting pins 65 through the.' barrels 63 and 64 the swinging head section is locked with the main frame of thespringbottom and .thus upon turning of the shaft 59 the ent-ire spring bottom can be raisedy or lowered at the head of the bed. v To prevent the losing of the pins 65 thel same can be united by means of flexible chains 56 with suitable brackets 67 lsecured to the end connecting bar 29 of the main frame of the spring bottom;

While if preferred the 'lifting-arms 48 can be made removable fromthe head section 27,

shaped .bearing heads 685.v This permits ef- 13o fective raising and lowering vmovement of the head section relative to the spring body.

In order to adjust the foot end of the spring bottom a transverse operating shaft 7 0 is provided. This shaft is rotatably mounted in suitable bearings carried by the side rails 18 of the bed and the shaft has formed therein or secured thereto a sector worm wheel 71 mesh* ing with a worm 72 formed orsecured to an operating shaft 73. rIhisl shaft 73 is rotatably mounted in a suitable bracket 7 4 carried by the frame of the bed. The shaft 73y extends between the foot of the bed and has affixed thereto a suitable manipulating hand wheel 75. Keyed or otl'ierwisesecured to the shaft 70 are the raising arms 76 for lifting the foot end of the spring body and these arms 7 6 are adapted to lie' between the spaced parallel bars 31 of the frame 30 of the spring bottom. As clearly shown in Figure 6 of the drawings, the arms 76 are provided with 4hooks 77 for engaging the said'side bars 31 of the frame. By manipulating the hand wheel the foot end of the bed can bev raised, so that the spring bottom will be tilted forwardly and Y by raising the head' section 27 various combinations of adjustment can be had. By lock- .ing the head section with the head end of the I spring bottom frame and by manipulating both the shafts 59 and 70, the entire spring` bottom can be raised. By simply manipulating the shaft 59 and locking the head section 27 vto the vspring bottom frame, the bottom frame can betilted downwardly toward the foot end. f

Side links 80 can vbe pivotally secured'to the side bars 30 of the main body portion 26 function ofpreventing side sway of the spring relativeto the frame of the bed.. v v

From the foregoing description, it can be seen that a novel hospital bed has been provided of an exceptionally simple and dura-v ble construction, in which the angle of the spring bottom frame can be readily changed.

Changes in details may be made without departing from the spirit or scope of this invention, but:

What I claim as new is 1. In a hospital bed, a'bed frame, a bed spring for theframe.including a main body extending the full length thereof having end rails and side rails, each side rail consisting of spaced longitudinally extending straps, a head section extending over a portion of the main body including side arms pivoted between the straps ofthe side rails and an end rigid bar, liftingarms rockably .carried by the frame and' extending longitudinally thereof betweenthe straps of the side rails and slidably engagingthe arms of the head secn tion, and means for detachably locking .the head section with the main body.

2. A bed comprising end rails, links connected to the end rails, a head section pivotally mounted and having a cross bar arranged adjacent one of the end rails, other links connected to the cross bar and other end rail and arranged'between said first links, and means V'for raising and lowering the head section.

In testimony whereof I aflix my signature.

GURDEN ROBINSON. i 

